Function mapToTeamPlanName

apps/sim/lib/billing/organizations/provision-seat.ts:240–255

* Map a Pro (or legacy) plan to a Team tier, choosing the smallest Team tier * whose credit allowance is at least the current plan's so an upgrade never * silently drops credits. Returns `null` when no eligible Team tier exists * (e.g. a Max owner when the Team Max price is unconfigured) so the c

(plan: string)

 * surface `upgrade-required` instead of downgrading.
 */
function mapToTeamPlanName(plan: string): string | null {
  if (isTeam(plan)) return plan

  const credits = getPlanTierCredits(plan)
  const eligibleTiers = [...CREDIT_TIERS]
    .filter((tier) => tier.credits >= credits)
    .sort((a, b) => a.credits - b.credits)

  for (const tier of eligibleTiers) {
    const candidate = buildPlanName('team', tier.credits)
    if (getPlanByName(candidate)) {
      return candidate
    }
  }
  return null
}